Gas turbine combustor gas fuel and air mixing device
A gas fuel and gas turbine technology, applied in combustion chambers, continuous combustion chambers, combustion methods, etc., can solve the problems of local high temperature, uneven mixing of fuel and air, high NOx pollutant emissions, etc., and achieve uniform mixing Increased efficiency, reduced emissions, and a wide range of applications
Active Publication Date: 2022-01-21
中国船舶重工集团公司第七0三研究所
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[0004] The object of the present invention is to provide a gas fuel and air mixing device for a gas turbine combustor that solves the technical problem of uneven mixing of fuel and air, local high temperature during combustion, and high NOx pollutant emissions.
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[0019] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0020] combine Figure 1a-4 , The high-uniformity mixing technology of fuel and air has been blocked by foreign manufacturers for a long time, filling the lack of domestic gas turbines in the field of low-emission or ultra-low emission technology, mastering fuel and air mixing technology with independent intellectual property rights has become the key to breaking the monopoly one of the points. The present invention has 36 mixing devices in the gas turbine, and each mixing device is mainly composed of a mixer 4 , a nozzle 2 and a snap ring 3 . The two ends of the mixer 4 are plugged with the primary guide 5 and the inner shell 6 respectively, and the nozzle is inserted into the mixer 4 through the turbine bearing casing, and fixed with the snap ring 3 . The mixer 4 is provided with two left-right symmetrical mounting seats 7 , and the mixer 4 is fixed on the inn...
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The object of the present invention is to provide a gas turbine combustor gas fuel and air mixing device, including a mixer, a nozzle, the mixer includes an air inlet, a nozzle installation port and a mixed gas outlet, the mixed gas outlet is connected to the inner shell, and the air inlet is connected to the guide , the nozzle is inserted into the mixer through the turbine load-bearing casing through the nozzle installation port. The mixer is in the shape of an elbow, and the cross section of the mixer is oblate. , one side is provided with diversion fins up and down, the diversion ribs on the other side of the center line of the mixer are vertically distributed with this side, and there is an air flow channel between the two sides. The invention can realize sufficient mixing of gaseous fuel and air and improve the uniformity of mixing. The certain swirl strength of the mixer can effectively ensure the stable combustion of the gas turbine combustor. The improvement of mixing uniformity can effectively reduce the emission of NOx pollutants from gas turbines.
Description
technical field [0001] The invention relates to a fuel-air mixing device, in particular to a gas turbine fuel-air mixing device. Background technique [0002] As people's awareness of environmental protection increases day by day, as well as the establishment and continuous improvement of emission standards, increasingly strict limits are put forward for the pollutant emission of gas turbine combustors. In order to meet the increasingly stringent emission requirements, in the past 30 years, major gas turbine research and development institutions and gas turbine manufacturers in the world have invested a lot of manpower and material resources, carried out a lot of research work on low-emission combustors of gas turbines, and developed a variety of The low-emission technology of the gas turbine combustor continuously reduces the NOx emission of the gas turbine. [0003] At present, the combustion chamber low emission technologies mainly include wet low emission and dry low em...
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IPC IPC(8): F23R3/28
CPCF23R3/286
Inventor 林枫冉军辉齐秀龙曹天泽赵加凤武萍张晨曦任艳平
Owner 中国船舶重工集团公司第七0三研究所